Telescope sight mounting



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l v u 4k OC' 29,.. 1935- F. A. Kul-1N 2,018,960

(i: I TELBscoPE SIGHT MOUNTING I j Filed Nov. 9, 1952 l l Flai INVENTOR- ATTORNEY impossible.

.Patented Oct. 29, 1935 UNITED STATES UVUI VII PATENT oFElgcE The Lyman Gun Sight Corp., Conn., a. corporation of Connecticut Middlefield,

Application November 9, 1932, Serial No. 641,848 13 Claims. (Cl. 33-l50) My invention relates to a telescope sight-mounting and in certain aspects to a mounting for a hunting. type of telescope sight. Hunting types of telescopes and the mounts in which they are supported, especially those intended for use on high power rines, are required to withstand considerable shock owing to the. heavy recoil of these ries and a great deal of eifort has been expended in the art in an endeavor to produce telescopes and mounts having sumcient strength and rigidity to withstand this shock without becoming loosened or otherwise disturbed during the ring of the rines. 'I'he usual mount is provided with a plate which is pinned, screwed and sometimes soldered to the receiver of the rie and serves as al support for the base of the mount, the latter being removably attached 'to the plate and having clamping rings in which the telescope sight isA secured. Provision is usually made for adjusting the telescope laterally with respect to the base and it has also been proposed to adjust the telescope in a vertical direction although such sight adjustment is usually taken care of by the use of a vertically adjustable reticule mounted in the telescope.

I have found that it is relatively impossible to effectively sight in or adjust a telescope sight in the usual or known types of mounts. That is to say it is relatively impossible to adjust these mounts so that the shot group may be centered with any degree of certainty at the point of aim. This I attribute partly to .the fact that the hunting type mounts as heretofore known have considerable looseness or backlash inherent in their design and partly to the common practice of -depending on friction between the parts of the mount for holding the mount in adjusted position. Not only is the usual hunting type of mount dilicult to adjust but an accidentalr fall of the 'riiie will often so disturb this adjustment that the rifle must be sighted in again.

In the preferred form of the invention to be hereinafter described I follow to a certain extent the usual practice of attaching a plate to the receiver of the rifle and detachabl-y supporting a mount base on the plate. I also prefer to make th mount ustable vertical1y\asf\ r e ll as later-T ally so as tor eliminate' tl`s'-ia'cljustable reticules which have always been troublesome. An important feature of my invention resides in an arrangement for effecting positive movements of adjustment either laterally or vertically or both so that the point of impact of the riier may be corrected or controlled in a manner heretofore A further feature of the invention a J s resides in an arrangement for effecting these adjustments such that backlash, spring or the like are constantly eliminated as lthe mount is adjusted either laterally or vertically and without the necessity of adjusting any additional part or parts. 5 A still further feature resides in a novel arrangement for detachably supporting the mount base on the plate such that the use of dovetails or the like lis eliminated the base being readily remove vand replaced without disturbing the adjustmen 10 of the telescope sight.

To these and other ends, the invention consists in the novel features and combinations of parts to be hereinafter described and claimed.

In the drawing,

Fig. 1 is an elevational view of a telescope sight mounting embodying the invention;

Fig. 2 is anl end view of the same;

Fig. 3 is a. sectional view along line 3--3 of Fig. 2:

Fig. 4 is a sectional view along line 4-4 of Fig. 1; and

Fig. 5 is a sectional view along line .'i--Sv oi!l Fig. 1.

In the preferred embodiment o1' the invention 25 I have provided for both lateral and vertical movements of the telescope sight but it will be understood that I may use either of these alone. For example in cases where a. telescope having a vertically movable reticule is used the vertical 30 adjustment of the mount may be dispensed with. Furthermore it is to be understood that the mount of the invention is not limited to use with any particular type of rifle and while shown and hereinaiter described in connection with a bolt action 35 rifle it is capable of use with other types of repeating rifles as well as with single shot ries. v In the drawing the reference numeral I 0 indicates in general a bolt action rifle, which is broken away at the ends. rifle I0 having a receiver Ii 40 on one side of which a plate i2 of telescope sight mount i3 is secured by suitable means. as for example, screws I4 the inside surface of the plate l2 being curved, as at l5, to t the receiver H, the plate being on the left side of the receiver 45 when looking towards the muzzle of the rifle. The base i B, of mount I 3, isdivided into an upper section i1. having clamping rings IB and i9 for telescope 2l), and a lower section 2 I having a downwardly directed longitudinal slot 22 in which the 50 upper end of plate i2, fits plate I2 being detachably secured to the lower base section 2| by pivot screw 23.

Lower base section 2| is provided with a dat upper `face 24- on which the fiat lower face 25 55 V if of upper base section I1 rests the two sections being held against separation by screws 28' which pass through enlarged openings 21 in lower base section 2| at the ends thereof and are threaded in upper base section l1. A dowel 28, fast in one section and free in the other, serves as a pivot, about -which the upper base section I1 may be swung on'the lower base section 2|, to provide for lateral or windage adjustments of the telescope 20, the enlarged opening 21 allowing sufficient lateral movement of screws 26 with respect to base section 2| to take care of any possible lateral or windage correction required.

Movement of upper section I1 about dowel 28 is produced by screws 29 and 30 which bear against studs 3| and 32 fast in upper section I1 andextending downwardly into enlarged openings 33 and 34 in lower section 2|. The studs 3| and 32 are near the opposite ends of upper base section I1 and it. will be readily understood that 'if one screw is loosened or backed away from its cooperating stud and the other screw tightened or forced against its stud the upper base section will be swung about the dowel 28 in a direction depending on which screw is loosened and which tightened. In practice the rst screw is only loosened or backed up an amount suicient to take care of the adjustment required and the other screw. tightened an amount suincientyto force the cooperating stud against the end. of the screw which was loosened. Thus as the adjustment is completed both screws will be bearing rigidly against their studs and, as the studs are at opposite sides of the dowel 28, the

35 .'upper base section will be locked against movement about dowel 28 on the lower section I6. If desired the screws 2 6- may then be set up tighter to still further hold the base sections against relative movement.-

Vertical movement of the telescope 20 is acoomplished by screws 35. and 36 which passA through enlarged openings 31 and 38 in upper base section I1 and are threaded through lower base section 2| the screws 35 and 36 engaging the upper face 39 of plate 2 at the oppositeends thereof. It will be'greadilyseen that if one of the screws 35 and 36 is loosened or backed up and the other tightened the base sections of the mount will be swung about the pivot screw 23 to As in the case of the windage or lateral adjusting screws 29 and 30 the elevation screws 35 and 38, dependingon which waythe mount is to be swung, are only loosened or backed up an amount suicient lfor'the adjustment of telescope 20 necessary and the other screw tightened to swing the mount v enough to force the end ol'. the loosened screw against the plate I 2. It willthus be apparent,

as inthe case of the windage screws, that upon the 4adjustment of the 'elevation screws 35 -and 36`the-mount will be locked rigidly against move-- ment on pivot screw 23 by screws 35 and 36 bearing against the opposite ends of the plate. t

The plate I2 fits tightly in slot 22 without any side play therein but not so tightlyA that the mount cannot be separated from the plate readily when the pivot screw is removed; In order to lock screws 35 and 36 against movement, and thus to keep the elevation adjustment from changing when the mount is separated from the plate, set screws 40 are provided mounted in section 2| and bearing against screws 35 and 36. The heads of screws 29, 30, 35` and 3'5. may be graduated, as at 4I and `42, to assist in making corrections in adjustment and if desired the pivot screw 23 may be tapered, as at 43, and the opening in which screw 23 passes through plate I 2 may be given a similar taper. 'I'hus after the mount has been adjusted and removed from the rifle and again assembled thereon the tapered portion of the pivot screw 23 will assist in drawing the elevation screws into contact with the plate with the same degree of pressure that these screws had before removal.

In use the plate I2 is rigidly attached to the rie or other rearm and the telescope rigidly clamped in rings I8 and I9 screws 44 being provided for this purpose. The plate thereafter remains permanently attached to the rie and the telescope remains'permanently clamped in the rings. Upon ring the riile at a target it may become apparent that corrections of sight adjustment are necessary which may be made by adjusting the windage screws 29 and 30 ii.' lateral correction is necessary or the elevation screws 35vand 36 if elevation corrections are necessary. When these adjustments have been made in the manner previously described the set screws 40 may set up as well as screws 2B. All parts of the mount are now rigidly held against movement and the rie may be fired indenitely without further adjustments. Furthermore the mount may be removed from the plate and restored thereon without the necessity of readjusting the same. The lateral and vertical .adjusting f to be attached to the receiver of a rifle, a base,

means on said base for supporting a telescope sight, freely removable pivotal means for detachably supporting said base on said plate and means carried by saidbase and engaging said plate to swing the base about said pivotal means, said last named means and said base being freely separable from said plate as a unit upon removal of said pivotal means.

2. In a telescope sight mount, a plate adapted to be attached to the receiver of arlfle, a .base having a-slot in which said plate may be received, means on said base for supporting a telescope sight, freely removable pivotal means for detachably supporting said base on said plate with the latter in saidy slot, and means carried by said base and extending into said slot to engage said plate to swing the base about said pivotal means, said base and the means carried by the-base for swinging the saine being freely separable from said plate as-a unit upon removal of said pivotal means.-

- 3. In a telescope sight mount, a plate adapted to beattached to the receiver of a rifle, a base having a downwardlydirected slot in which said. plate is received, means on said base engaging said plate to pivotaily support the base thereon, means on said base extending into said slot to engage said plate near one end thereof to swing said base in one direction and separate means extending into said slot on the side of said pivot opposite the iirst means to engage said plate to swing said base in the opposite direction, seid ocalbii i means for swinging the base limiting the movement of one another.

- 4. In a telescope sight mount. a plate adapted to be attached to a. rifle, a base having a slot in which said base is received, means for pivotally and detachably supportingsaid plate in said slot, a screw threaded in said base and extending into said slot to engage the plate to swing the base in one direction and a screw threaded in the base and extending into the slot to engage the plate' to swing the base inthe opposite direction.

. 5. In a telescope sight mount, a base divided horizontally into two parts, one of said parts being provided with means for supporting a telescope sight, the other part having means assoelated therewith for attachment to a rie, a vertical pivot associated with said parts about which one of the parts may swing horizontally, means iixed on one of said parts at the opposite ends thereof and extending into the other'part and adjustable means on the latter near the ends thereof adapted to engage said fixed parts to swing the first part about the pivot in opposite directions respectively.

6. In a telescope sight mount, a base divided horizontally into two parts having relatively nat opposing faces, means at either end of said parts for holding the faces against separation while permitting relative transverse movement, means mid way the length of the par-ts for joining them for relative pivotal movement about a vertical axis. and means at the ends of one of said parts engaging vthe other part to swing the latter about the pivotal means in either direction.

7. InA a telescope sight mount, a base divided horizontally into two parts, one of said parts being provided with means for supportingl a telescope sight, the other of said parts having means associated therewith for attachment to a rifle, means associated with said parts for supporting them for relative pivotal movement about a vertical axis, studs on one of said 'parts near the opposite ends thereof and adjustable means on the other part engaging the studs for swinging the rst part about the pivotal means.

8. In a telescope sight mount, a base divided horizontally into two parts, means on the upper part for supporting a. telescope sight, means associated with the lower part for attachment to a rie, a vertical dowel extending from one of said parts into the other mid way the length of said parts, said dowel serving as a pivot about which the upper part may swing horizontally on the lower, studs one at each of the ends of the vupper part and extending into the lower part, the lower part being provided with enlarged openings intol which thestuds extend and. screws in the lower part extending into said openings to engage theA studs to swing the upper part about the pivot.

9.. In a telescope sight mount, a base divided horizontally into two parts, means on the upper part for supporting a. telescope sight, means associated with thelower part for attachment to a rifle, a vertical dowel extending from one ot said parts into the other mid way the length of said parts, said dowel serving as a pivot about which the upper part may swing horizontally on the lower, studs one at each of the ends of the upper part and extending into the lower part, the lower part being provided with enlarged openings into Whichthe studs extend. screws in the lower part extending into said openings to engage the studs to swing the upper part about the pivot and 5v screws extending through the lower part into the upper for limiting the relative movement of the parts to pivotal movement about the dowel.v

10. In a telescope sight mount, a base on which a telescope may be mounted and means for del0 tachably supporting the base on a rie, said last named means comprising a plate adapted to be attached to the rifle and a removable pivot screw extending through the base and platein a horizontal direction, means associated with the base 15 and engaging the plate at opposite sides of the pivot screw for swinging the base about the pivot screw, said base being divided horizontally into an upper and a lower part, means i'or pivoting said parts for transverse relative movement, and 20 means carried by one of said parts and engaging the other of said parts `at either end thereof for swinging the parts relatively about they pivoting means.

11`. In a telescope sight mount, a plate adapted 25 to be attached to a rifle, a base, means for attaching a telescope to said base, pivotal means for detachably supporting the base on said plate, a screw threaded in said base and engaging the plate to swing the base in one direction about the 30 pivotal means and a screw threaded in the base and engaging the plate to swing the base in the opposite direction, the base with the telescope mounted thereon and the screws being separable from the plate as a unit upon removal of said pivotal means.

12; In a telescope sight mount, a. xed lelement adapted to be permanently attached to a firearm and a telescope sight supporting element adapted to be detachably received on said fixed element, 40 said telescope sight supporting element comprising means for securing a telescope thereon, a pair of spaced downwardly extending legs forming therebetween a slot in which the fixed element may be received and a pair of adjustable abut- 45 ments extending into the slot at a spaced interval from one another and adapted to engage the fixed element to control the angular relation between the elements and detachable means engaging the legs and fixed element to hold the 50 iixed element between the legs in such angular relation.

13. In a telescope sight mount, a plate adapted to be attached to a rifle, a base, means for attaching a telescope sight to said. base, detachable 5.5 pivotal means for securing the base on the plate,

a -screw threaded in the base and engaging the plate to swing the base in one direction about the pivotal means, a screw threaded in the base and engaging the plate to swing the base in the 00 opposite direction, and means for locking the screws in adjusted position, the base with the telescope sight mounted thereon and the screws being separable from the plate as a unit upon removal of the pivotal means, the screws re- 05 maining locked against movement during separa., tion of the base from the plate.

FREDERICK A. KUHN. 

